Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	5416	817	15%	0.01	1063	552	52%	6.7
10 Kinds of People	9587	2015	21%	0.01	1657	1136	69%	5.1
2048	5664	2705	48%	0.00	2581	2212	86%	2.2
3D Printed Statues	5144	2474	48%	0.00	2346	2107	90%	1.9
3D Printer	444	102	23%	0.00	162	82	51%	7.6
3-Sided Dice	1756	142	8%	0.00	282	106	38%	8.6
4 thought	5486	1860	34%	0.00	1862	1552	83%	3.0
A1 Paper	3704	1095	30%	0.00	1076	845	79%	3.8
Aaah!	19116	9058	47%	0.00	8099	7533	93%	1.5
Abandoned Animal	1168	229	20%	0.03	274	196	72%	5.1
ABC	7266	3368	46%	0.00	3209	2914	91%	1.7
Above Average	3992	1674	42%	0.00	1705	1526	90%	2.0
A+B Problem	5330	565	11%	0.03	775	272	35%	8.0
A Brief Gerrymander	146	26	18%	0.15	32	18	56%	8.4
Abstract Art	205	54	26%	0.00	54	40	74%	5.9
Absurdistan Roads II	496	178	36%	0.00	173	117	68%	6.8
Absurdistan Roads III	1225	326	27%	0.02	312	234	75%	5.6
Access Points	145	66	46%	0.01	57	42	74%	5.6
A Classy Problem	6042	1620	27%	0.01	1386	1074	77%	4.4
ACM Contest Scoring	4886	3078	63%	0.00	2709	2559	94%	1.5
Adding Words	6776	1560	23%	0.00	1585	1207	76%	4.3
A Different List Game	5306	368	7%	0.00	647	131	20%	9.1
A Different Problem	20566	7990	39%	0.00	7392	6421	87%	2.1
Adjoin the Networks	1422	380	27%	0.00	332	257	77%	5.8
Administrative Difficulties	755	187	25%	0.03	205	137	67%	6.5
Advanced Causal Measurements	49	12	24%	0.10	15	12	80%	6.6
Adventure Begins	142	47	33%	0.06	54	41	76%	3.6
Adventures in Moving -- Part IV	688	214	31%	0.00	197	169	86%	4.5
A Favourable Ending	1204	309	26%	0.00	287	208	72%	4.9
A Feast For Cats	1282	462	36%	0.19	319	263	82%	4.7
Air Conditioned Minions	3007	847	28%	0.00	925	686	74%	4.3
Airline Hub	1514	271	18%	0.01	300	165	55%	6.9
Airport Coffee	702	150	21%	0.09	143	108	76%	6.6
Airport Construction	2682	355	13%	0.02	285	148	52%	7.4
Airport Logistics	45	10	22%	0.00	16	10	62%	7.7
Airports	283	88	31%	0.11	84	64	76%	6.0
Akcija	4686	2020	43%	0.00	1817	1597	88%	2.1
Aladin	711	67	9%	0.10	108	20	19%	8.9
Alchemy	95	15	16%	0.03	27	15	56%	8.0
Alea iacta est	29	11	38%	0.34	14	11	79%	6.9
Alice in the Digital World	1934	541	28%	0.01	537	422	79%	3.9
Alien Codebreaking	53	6	11%	3.23	15	4	27%	8.6
Alien Numbers	1685	857	51%	0.00	834	751	90%	2.1
A List Game	5915	1753	30%	0.00	1687	1411	84%	3.1
All about that base	2403	950	40%	0.00	911	766	84%	2.9
All Different Directions	834	374	45%	0.00	338	296	88%	2.6
Allergy Test	324	106	33%	0.00	100	56	56%	7.7
All Friends	769	146	19%	0.00	130	65	50%	9.0
All Just A Dream	1466	345	24%	0.05	232	164	71%	6.5
All Pairs Shortest Path	6536	1132	17%	0.02	778	537	69%	6.0
Almost Perfect	4769	1103	23%	0.00	1189	932	78%	3.5
Almost Union-Find	4940	865	18%	0.02	773	428	55%	7.0
Alphabet	832	415	50%	0.00	426	363	85%	2.9
Alphabet Spam	5225	3350	64%	0.00	2585	2489	96%	1.4
Alternative Bracket Notation	193	81	42%	0.00	85	71	84%	5.0
Altruistic Amphibians	295	69	23%	0.24	72	49	68%	5.4
Amalgamated Artichokes	3184	1431	45%	0.01	1281	1115	87%	2.7
Amanda Lounges	1197	335	28%	0.03	306	238	78%	5.5
A Mazing!	1491	352	24%	0.09	170	130	76%	4.8
Amazing Adventures	84	29	35%	0.03	31	22	71%	6.7
Amazing Race	258	68	26%	0.39	75	55	73%	6.3
Ambiguous Result	203	48	24%	0.03	71	46	65%	7.5
Amsterdam Distance	952	391	41%	0.00	438	353	81%	2.8
A Multiplication Game	403	108	27%	0.00	135	98	73%	4.8
Anagram Counting	2560	977	38%	0.00	929	767	83%	3.3
Andrew the Ant	220	59	27%	0.06	74	55	74%	5.4
A New Alphabet	8213	3721	45%	0.00	3486	3222	92%	1.8
An I for an Eye	204	57	28%	0.00	69	50	72%	5.3
Animal Classification	1320	278	21%	0.03	262	166	63%	6.9
An Industrial Spy	1278	661	52%	0.02	518	441	85%	3.3
Another Brick in the Wall	1829	974	53%	0.00	948	865	91%	1.9
Another Candies	5837	1571	27%	0.00	1648	1352	82%	2.9
Another Dice Game	80	59	74%	0.00	51	48	94%	3.4
Another Query on Array Problem	1123	149	13%	0.05	250	105	42%	7.8
Anthony and Cora	652	163	25%	0.00	199	134	67%	5.8
Anthony and Diablo	1631	584	36%	0.00	645	557	86%	2.4
Antiarithmetic?	999	182	18%	0.01	242	132	55%	7.3
Ants	2474	1136	46%	0.00	868	774	89%	2.2
Apaxiaaaaaaaaaaaans!	8706	5355	62%	0.00	4859	4659	96%	1.3
Appalling Architecture	72	29	40%	0.00	33	29	88%	5.1
Apparatus	620	154	25%	0.01	117	90	77%	5.1
Apple Market	436	88	20%	0.07	100	54	54%	7.2
Apples, Cherries, and Mangos	357	112	31%	0.02	105	81	77%	5.6
A Prize No One Can Win	353	155	44%	0.00	122	106	87%	2.7
Aquarium Tank	366	108	30%	0.00	98	77	79%	5.8
Aqueduct Construction	140	49	35%	0.01	40	34	85%	6.3
A Question of Ingestion	982	230	23%	0.00	224	163	73%	5.9
Arable Area	231	53	23%	0.04	55	33	60%	8.1
Arachnophobia	229	68	30%	0.14	64	51	80%	5.1
A Random Problem	102	22	22%	0.00	24	17	71%	7.1
A Rational Sequence	1159	384	33%	0.00	426	305	72%	5.1
A Rational Sequence 2	1324	960	73%	0.00	885	845	95%	1.6
A Rational Sequence (Take 3)	596	505	85%	0.00	388	379	98%	1.7
Arbitrage?	1715	345	20%	0.02	254	204	80%	3.6
Arcade!	1118	201	18%	0.01	194	138	71%	6.2
Arctic Network	1205	419	35%	0.00	363	287	79%	4.7
A Real Challenge	5701	2753	48%	0.00	2649	2483	94%	1.6
Area of Effect	87	10	11%	1.93	20	8	40%	8.0
Are You Listening?	425	143	34%	0.00	136	128	94%	2.6
Arithmetic	2205	636	29%	0.00	650	496	76%	4.0